Clinical Result of Cataract Operation using Custom Control Software

ABSTRACT

PURPOSE: To compare the effectiveness and safety of the hyperpulse phaco mode based on the custom control software with those of the conventional continuous phaco mode. METHODS: This study included 560 eyes of 496 patients, which were divided into 2 groups according to the mode of phacoemulsification. Each group was further stratified into 4 groups according to their nuclear opacity. The following parameters were compared between groups having the same degree of nuclear opacity: the best corrected visual acuity preoperatively, at 1 day and 2 months postoperatively, the change of endothelial cell count and hexagonality preoperatively and at 2 months postoperatively, as well as the total phaco energy used in the operation. RESULTS There were no significant differences in visual acuity between control and experiment groups. As for change in endothelial cell count, there were also no statisticallysignificant differences. Hexagonality was significantly higher in the nuclear opacity groups 3 and 4 of the hyperpulse mode than those of the continuous mode. The absolute phaco time was significantly less in the nuclear opacity groups 1, 2 and 3 of the hyperpulse mode than those of the continuous mode. CONCLUSIONS: Phacoemulsification using the custom control software showed an advantage decrease in the total phaco energy and corneal endothelial cell damage. This result will improve the postoperative prognosis.